Muséum national d'Histoire naturelle

The parent bodies of Ryugu and Ivuna formed before those of other carbonaceous chondrites

Most carbonaceous chondrite (CC) meteorites contain abundant chondrules, millimeter-scale spherical inclusions of previously molten material. Ivuna-type carbonaceous chondrites (CIs) do not contain chondrules, nor do samples of the carbonaceous asteroid Ryugu. CIs and Ryugu share...

Revealing archaeological olive diversity: insights from stone geometric morphometrics, experimental charring, and varietal identification (Port-la-Nautique, France, Roman period)

The cultivated olive tree, domesticated in the Levant by the mid-5th millennium BCE, spread westward across the Mediterranean to reach southern France by 600 BCE. Although geometric morphometrics applied to archaeological olive stones has provided insights into this diffusion, mo...

Life finds its way in seaports: environmental DNA monitoring in the Grand Port Maritime de Guadeloupe shows vertebrate richness but reduced phylogenetic diversity

Abstract Ports are increasingly recognized as distinct urban marine ecosystems (UME) shaped by intense human activities, yet their biodiversity remains poorly documented, particularly in tropical regions. Environmental DNA (eDNA) metabarcoding offers a powerful, non-invasive appr...

Zoological biobanks as a resource for microplastic analysis: a Py-GC-MS/MS case study on sea cucumbers

Microplastics have spread through every ecosystem studied. Yet, documenting their spatiotemporal distribution remains challenging, particularly in marine environments where sampling is costly and difficult. Archived specimens in zoological biobanks offer an underused resource for...